See Sigeberht II of Essex for the Saxon ruler by that nameSigebert II (602–613) or Sigisbert II, was the illegitimate son of Ermenberge and Theuderic II, from whom he inherited the kingdoms of Burgundy and Austrasia in 613. However, he fell under the influence of his great-grandmother, Brunhilda. Warnachar, mayor of the palace of Austrasia had Sigebert brought before a national assembly, where he was proclaimed king by the nobles over both his father's kingdoms.